Active Flow and Combustion Control 2014 (Notes on Numerical by Rudibert King

By Rudibert King

The publication experiences at the newest theoretical and experimental advances within the box of lively movement and combustion regulate. It covers new advancements in actuator expertise and sensing, in powerful and optimum open- and closed-loop keep watch over, in addition to in version relief for keep watch over. It collects contributions awarded throughout the 3rd version of the lively move and Combustion keep watch over convention, held in September 10-12, 2014 on the Technische Universität Berlin (Germany). This convention, in addition to the examine offered within the e-book, were supported via the collaborative learn middle SFB 1029 -Substantial potency raise in gasoline generators via direct use of coupled unsteady combustion and stream dynamics, funded through the DFG (German study Foundation).

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Active Flow and Combustion Control 2014 (Notes on Numerical Fluid Mechanics and Multidisciplinary Design)

The booklet experiences at the newest theoretical and experimental advances within the box of lively movement and combustion regulate. It covers new advancements in actuator expertise and sensing, in strong and optimum open- and closed-loop keep watch over, in addition to in version relief for keep watch over. It collects contributions provided in the course of the 3rd variation of the lively movement and Combustion regulate convention, held in September 10-12, 2014 on the Technische Universität Berlin (Germany).

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Section 2 briefly reviews ILC and RC. Section 3 describes the compressor stator cascade in detail and Sec. 4 introduces the surrogate control variable and the control architecture. Experimental closed-loop results are presented in Sec. 5 and in Sec. 6 a conclusion is drawn. e. optimisation based ILC [9] and H∞ –optimal RC [6], are revisited in this section. Whereas a time-domain description will be given for ILC, frequency-domain approaches will be better suited for RC. 1 Iterative Learning Control System Description.

Again a downstream shift of the LSB is found in these cases. The pressure fluctuations caused by the corner vortex are found to be less distinct for the ϕ = 20◦ case compared with the baseflow and the vortex breakdown takes place further downstream. ϕ = 70◦ represents a case, where the choking is moving towards the measurement blade and the lift coefficient increases again (Figure 7d). This causes a stabilization of the secondary flow structures and results in a more definite corner vortex structure.

The positive area between the suction- and the pressure surface Δcp distribution indicates the benefit of the operating range of the stator due to the actuation. 5 Conclusion and Outlook Within the Collaborative Research Centre 1029 a highly loaded linear compressor cascade is used, with major three-dimensional flow structures and a trailing edge separation under design conditions causing high losses without AFC. This stator cascade was now used under periodical non-steady conditions, as they are dictated by pulsed combustion.

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